Let me preface this with, I wrench and do everything on my cars. With that being said, I am an absolute dummy whenever it comes to electronics. Is there any possibility of getting (literally) a step-by-step DIY install? I am talking, take this exact wire and solder to this wire, etc. This connector gets attached to this wire, route this wire through here, etc. Maybe I am just asking too much, not sure. I just don't want to mess anything up!